Construction is the industry where bad bookkeeping costs the most and hides the best. A builder can be busy, invoicing hard, and quietly losing money on half their jobs because nobody is tracking cost against each one. So the question is not just what a construction bookkeeper costs. It is what getting it wrong costs, and that number is bigger than any fee.

Published: July 2026

What a Sydney builder should pay

Construction bookkeeping is priced by two things above all: job volume and crew size. More jobs means more cost allocation, more progress claims, more retention tracking. More crew means bigger, more complex payroll and heavier TPAR obligations.

As an independent market estimate, a small Sydney building or trades business with a handful of jobs and a small crew should expect fixed-price bookkeeping in the region of $1,200 to $2,500 a month. A larger operation running multiple concurrent projects, subcontractor-heavy TPAR, retention accounting and progress claims sits higher, commonly $2,500 to $4,500 a month. Those are estimates to frame the conversation, not a quote; the figure for your business depends on your job count, crew and systems, and is best pinned down against what a Sydney bookkeeper should cost and the fixed numbers in The Packs.

Compare either range to the cowboy on $80 to $150 an hour with no scope, who bills you for every progress claim as an “extra” and still cannot tell you which jobs made money. At construction scale, that is the most expensive way to buy the least useful information.

The cost of getting WIP wrong (this is the real number)

Here is what a cheap construction bookkeeper never puts in front of you: work in progress. On a longer job, you are incurring costs and claiming progress payments across months. If your books do not track cost-to-date against each job and recognise revenue properly, two things happen, both expensive.

Over-claim your progress and you book profit you have not earned yet, which means you pay tax on money that is really just a customer’s deposit against future work. Under-claim, or fail to track committed costs, and you starve the job of cash, chasing your tail on a project that looked fine on the surface.

Put rough numbers on it. On a $400,000 job, a 10% error in how you value work in progress misstates your position by $40,000. Across three or four concurrent jobs, a builder with sloppy WIP can be wrong about their actual profit by six figures at any given moment, and only find out when the accountant untangles it at year-end, or when the cash runs out mid-project. That is not a bookkeeping fee. That is the business. A bookkeeper who tracks WIP properly is not a cost, they are the thing standing between you and building three jobs at a loss without knowing it.

What a construction bookkeeper actually does that yours might not

Beyond the monthly reconciliation, construction bookkeeping earns its fee on the industry-specific work:

• Job costing: every cost coded to the job it belongs to, so per-job margin is real, not a guess.
• Progress claims and retention: claims tracked, retention amounts held and released correctly, so you are not surprised by money you forgot was owed to you or held against you.
• Subcontractor management and TPAR: subbie payments captured cleanly all year, with ABNs and gross amounts ready for the Taxable Payments Annual Report due 28 August. Building and construction is squarely in the TPAR net, and it is not a report you want to assemble from a shoebox in late August.
• Crew payroll: correct awards, allowances and, from 1 July 2026, super paid every payday under the new Payday Super rules.

If your current bookkeeper does the reconciliation but none of the above, you are paying for half a job. Our construction bookkeeper Sydney page goes deeper on the industry specifics.

What you should stop tolerating

Tracking a $2M trades business in a spiral notebook, discovering job losses at year-end, TPAR assembled in a panic, progress claims you are not confident are right. If that is your reality, a Free Xero Roast will show you exactly where the leaks are, and how to change bookkeepers covers moving on without dropping a single job mid-build.

Practical checklist you can run this week

1. Open Xero (or your ledger) and confirm the last full bank reconciliation date. If it is more than seven days ago on a trading business, you are flying on delay.
2. Pull aged receivables. Anything over 30 days needs an owner and a next action.
3. Confirm super for the last two pay runs left on time and was received by the funds (not just “submitted”). From 1 July 2026 the receipt clock is 7 business days.
4. Skim last month’s P&L for suspense, miscellaneous, or clearing accounts that only grow.
5. Book a Free Xero Roast if you cannot explain your cash, profit and obligations from last month’s pack in under ten minutes.

FAQ

How much should a construction bookkeeper cost in Sydney?
As a market estimate, roughly $1,200 to $2,500 a month for a small builder or trades business, and $2,500 to $4,500 for larger operations with multiple projects, retention accounting and heavy subcontractor TPAR. Pricing scales with job volume and crew size.

What is work in progress and why does it matter for builders?
Work in progress is the cost and revenue tied up in jobs that are not yet complete. If it is not tracked and valued correctly, your profit is misstated, sometimes by six figures across several jobs, and you can pay tax on unearned money or run a job out of cash without realising.

Do construction businesses have to lodge a TPAR?
Yes. Building and construction is one of the industries required to lodge a Taxable Payments Annual Report, due 28 August, reporting payments to subcontractors. A good bookkeeper captures the data all year rather than scrambling at the deadline.

Why is construction payroll more complex?
Crews mean awards, allowances, and often a mix of employees and subcontractors that must be classified correctly. From 1 July 2026, super must also be paid every payday under Payday Super, which adds a further timing obligation.

Can a bookkeeper tell me which of my jobs are actually profitable?
Only if they run proper job costing, coding every cost to the job it belongs to. Many cheap bookkeepers do not, which is why builders are often busy and profitable-looking while quietly losing money on specific jobs.

Is fixed-price bookkeeping better than hourly for a builder?
Almost always. Construction generates a steady stream of progress claims, subbie payments and payroll that hourly bookkeepers bill as endless extras. A fixed price makes the cost predictable and removes the incentive to drag work out.

About Sydney Bookkeeper

Sydney Bookkeeper is the modern, fixed-price Sydney bookkeeper for businesses with staff that are tired of slow, hourly, jargon-spouting incumbents. We work with professional services firms, construction and property businesses, agencies, tech and ecommerce companies, hospitality groups, and health practices across Sydney. Monthly bookkeeping, BAS lodgement, payroll, and Xero file cleanups, all on fixed monthly pricing, no lock-in.

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The team uses a registered BAS Agent for all BAS and IAS lodgement services. Full registration details, agent particulars, and copies of the Tax Practitioners Board (TPB) Code of Professional Conduct, the TPB complaints process, and any conditions on the agent’s registration are available on request by emailing [contact email]. This content is general information only, written for Australian small and mid-market businesses. It does not constitute tax, financial product, or legal advice and should not be relied on as such. The pricing and WIP figures are illustrative estimates and will differ for your business. For advice specific to your situation, contact the team directly or consult a registered tax agent or licensed financial adviser. Sydney Bookkeeper is not a licensed tax agent or licensed financial adviser. Information was current at the time of publication and may change without notice. We review and update guides periodically.

Sources

• Australian Taxation Office, Taxable payments annual report (TPAR): https://www.ato.gov.au/businesses-and-organisations/preparing-lodging-and-paying/reports-and-returns/taxable-payments-annual-report
• Australian Taxation Office, About Payday Super: https://www.ato.gov.au/businesses-and-organisations/super-for-employers/payday-super/about-payday-super